smoking gave me bad breath

I've had bad breath for around 18 months and smoking made it worse. Over time when I smoked I noticed a yellow substance/matter built up on my tongue and catalysed my bad breath. Anyone know what can be done to remove this? The yellow substance is spread out over my tongue but also on the fur on the back of my tongue, what is this and what can be done?

You should check with your dentist. He should be able to give you a tongue scraper that will help with the buildup of bacteria and debis on your tongue and perscribe any other needed treatment. You can buy the scrapers in the dental hygien section at your local store, but you may not be fully successful without a doctor's care.